Stamping-machine.



G. E. WILLARD & G. N. GOWDEN.`

- STAMPING MACHINE.

APPLICATION FILED JAN. 2B, 191s.

1,100,641, Patented June 16, 1914.

2 SHEETS-SHEET 1.

VI/Vkvl/ l Arm/Mfrs CGLUMBIA PLANOORAPH CD.. WASHINGTON, D. c.

G. E. WILLARD 6a C. N. COWDEN.

STAMPING MACHINE,

APPLIGATION IILBD JAN. 28, 1913.

Patented June 16, 1914.

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INVENTOHS GEORGE E. WlLLARD CFZIRLES N COWDEN WITNESS/5S #A7, LUM

ATTORNEYS coLuMmA PLANUGRAPH co.. WASHINGTON. D. c.

NTED STATES PATENT OFFICE.

GEORGE E. WILLARD AND CHARLES N. COWDEN, OF NASHVILLE, TENNESSEE.

STAMPING-MACI-IINE.

To all whom t may concern Be it known that we, GEORGE E. WILLARD andCHARLES N. CowDEN, citizens of the United States, and residents ofNashville, in the county of Davidson and State of Tennessee, haveinvented a new and Improved Stamping-Machine, of which the following isa full, clear, and eXact description.

r1`his invention relates to canceling, stamping or similar machinery,and has particular reference, as herein set forth, to a means forstamping letters or similar articles.

Among the objects of the invention is to improve this class of deviceswith respect to simplicity of construction and operation and efliciencyof service.

A further object of the invention is to improve the means for applyingink to the die.

The foregoing and other objects of the invention will hereinafter bemore fully described and claimed and illustrated in the drawings forminga part of this specification in which like characters of reference inndicate corresponding parts in all the views, and in which- Figure 1 is avertical longitudinal section of a preferred embodiment of theinvention, certain parts being in elevation; Fig. 2 is a verticaltransverse section on the broken line 2-2 of Fig. 1, showing the machineproper in elevation; Fig. 8 is a vertical transverse sectional detail onthe line 3*-3 of Fig. 1; and Fig. 4 is a detail described below.

The several parts of the machine may be made of any suitable materialsand the relative sizes and proportions thereof, as well as the generaldesign of the machine, may be varied in numerous immaterial particularswithout departing from the spirit of the invention hereinafter claimed.

Referring more particularly to the drawings, we show at 10 a frame ofany suitable design supported upon a base 11. The base includes asubstantially flat extension or foot 12 carrying a cushion 13. On theopposite end of the base is shown, by way of illustration of anyvsuitable power means, a motor M. A motor shaft 14 is fitted with apinion Specification of Letters Patent.

Application led January 28, 1913.

Patented June 16, 1914.

Serial No. 744,635.

15, and the shaft may be j ournaled in an eX- tension 16 formedintegrally or otherwise secured to the main frame 10.

A4 plunger 17 is mounted for vertical re-y ciprocations in a socket 18of the frame above the cushion 13. The lower end of the plunger hassecured thereto in any suitable man ner, a head or die 19 which isadapted to operate directly upon the work introduced to the machineabove thc foot 12.

As a suitable means for applying ink to the active face of the die, weprovide a roller 2O journaled transversely in a yoke 21 which occupies aplane substantially at right angles with an arm 22 to which the yoke isconnected. The arm 22 is pivoted above the die and to one side of theplunger, as indicated at 2S. An ink plate 24 is arranged substantiallyvertically with respect to the plunger and is shown carried by the diebetween the plunger and the arm 22, the lower end of the ink plate beingsubstantially flush with the active surface of the die. The relativesizes and arrangement of the plunger, die and inking device are suchthat when the plunger is in normal position, the inking roller 20 willbe in contact with the active face of the die as shown in full lines inFig. 1, but when the plunger is depressed, the inking roller will becarried downwardly by the plunger, and because of the eccentricity ofthe pivot 23, the arm will be swung around the pivot causing the rollerto travel across the face of the die and come into engaging coperationwith the plate 24, as indicated in dotted lines in said ligure. Theroller, when in engagement with the plate 24, will receive a freshsupply of ink, and when the roller is subsequently lifted, such ink willbe transferred to said die by the return of the parts to the positionshown in full lines, such return being effected by virtue of a spring25, or by any other suitable means.

lAt 26 is shown a shaft constituting the principal element cf a suitablemeans for operating the plunger, said shaft being journaled horizontallyin bearings 27 and 28 at the top of the frame. Adjacent one end of theshaft 26, a collar 29 is rigidly secured in any suitable manner, and awheel 30 is journaled loosely upon such end of the shaft, the wheelhaving a hub 31 adjacent said collar 29. The hub is provided with anysuitable number of sockets 31 arranged in a circular series around theaxis of the shaft 26 and said collar. lThe wheel 30 is secured upon theshaft for normal free rotation by any suitable means, and is in constantmesh with the aforesaid pinion 15 whereby the wheel 30- may beconsidered as a member rotating at a comparatively slow speed from themotor.

As shown especially in Fig. 3, we provide,

a key 32 slidable longitudinally of the shaft 26 into or out ofengagement with any one of the sockets 31', said key being shown asbeing adapted to extend through said collar 29 for engaging purposes,and the normal tendency is for such key to be projected into engagingposition by virtue of a spring 33, one end of which bears against thehead 34 of the key and the other end of the spring is supported by anysuitable means carried by the shaft and indicated, by way ofillustration, as ,a` clip 35 shown in Fig. 4. lThe key operate/spreferably in a groove 32 in the shaft and thereby, in connection withthe collar 29, is maintained in position. While the normal tendency, asabove stated, is for the key 32 to be projected into engagement with thewheel hub, we provide means normally preventing such action, such meansincluding a peculiar form of wedge or cam 36 shown in detail in Fig. 3and pivoted at 37 to a lug or extension 38 carried by the frame. rlhiscam device, by virtue of its inclined face 36', constitutes not only ameans to positively withdraw the key from any one of the sockets 31 ofthe hub, but also serves as a brake insuring the proper stoppage of theshaft 26 at the proper moment after being detached from the runningmember 30. The cam 36 under normal conditions occupies the positionindicated in Figs. 1 and 3, in which the wedge or inclined portionoccupies a position either in contact with the head 34 or in the path ofsuch head if the shaft 26 be rotated, and thereby the key will either beheld out of engagement with the wheel hub 31 or else will be withdrawnand then held, as the case may be, against pressure of the spring 33.The wheel 30, therefore, may continue to rotate at a uniform speedassuming` that the pinion 15 is connected to a constantly running shaft.rIhe cam 36, however, being substantially stationary, will virtuallyconstitute a brake serving to stop the rotation of the shaft 26 as thehead 34 of the key rides up the inclined face 36 as before described.The shaft may be started again so as to rotate With the wheel 30 bywithdrawing the cam 36 out of contact with the head 34 by any suitablemeans. As herein shown, we provide a pull rod 39 connected to the camthrough a lug 40, and said pull rod may be operated by any suitablemeans as, for instance, a lever 41 connected thereto and extending tothe outside of the casing 42 surrounding the mechanism. Should it bedesired to lock the cam out of the path of the ykey so that the shaft 26may be operated continuously, this may be done by holding the pull roddown as, for instance, by en gaging it over a pin 43. The cam isnormally pressed upward and maintained in the position shown in Fig. 3by virtue of a spring 44 having one end bearing against the cam and theother end supported upon a lug 45 extending outwardly from the frame.

On the end of the shaft 26 opposite the wheel 30 is connected a crankdisk 46 having a wrist pin 47 upon which is mounted a scotch yoke 43connected to the upper end of a shank 49 having a resilient connectionwith the plunger aforesaid. Said connection is effected by means of apin 51 extending through a slot 52 from one member to the otherproviding for a certain amount of individual movement between the shankand the plunger, but is resiliently resisted by means of a cushionspring 53. By this means, when the crank and wrist pin force the shankand plunger downward, the extent of movement of the plunger may varyaccording to the thickness of the article being impressed by the die,but proidding for aconstant extent of movement of the shank withoutdamage to the machine. To also prefer to employ, in connection with thedevice, an automatic counter or register 54 of any suitable type and thesame to be actuated from any suitable moving part of the device as, forinstance, a lug 55 connected to the crank disk and adapted to give astep-by-step rotation to a star wheel 56 connected to the counter.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

In a stamping machine, the combination of a rigid frame having avertical socket, a plunger having a hollow center mounted in saidsocket, a die carried by the lower end of the plunger and having` itsface arranged in a horizontal plane at right angles to the axis of thesocket, a vertically arranged inking plate connected to the die andextending thence upwardly in spaced parallel relation to the plunger,means to reciprocate the plunger including a` shank extending into thecenter of the plunger and having pin and slot connection therewith and aspring within the plunger and below the center of the shank, an armpivotally conneeted at its upper end to the Wall of the socket, theinking plate being between the arm and said socket, a yoke carried bythe lower end of said arm at a substantially right angle thereto, aroller journaled in said yoke and adapted to have rolling oon- Intestimony whereof We have signed our names to this specification in thepresence of subscribing Witnesses.

GEORGE E. WILLARD. CHARLES N. COWDEN.

tact with both the vertically arranged ink- Witnesses:

ing plate and With the horizontally arranged J. J. MORRISON, die duringthe reoiproeations of the plunger, E. L. PITMAN, and means tending tocause the arm to co- G. S. MOORE,

act with the plunger and parts carried B. L. BALLARD.

thereby.

Copies of this patent may be obtained for nve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

